CODEWITHSUNDEEP
androidandroid-intentmultidimensional-array
user2750762
user2750762

Reputation: 419

how to pass 2 dimensional array to as a intent in the android

I want to pass the following array to my receiver class in the same format and fetch it in same format i.e the array should maintain its structure.

 curDts= new String[][] {{"1","2","3"}, {}, {"4","5","6"}};

Following is what I have tried so far,

    Intent intent = new Intent(this, AlarmReceiver.class);
            for(int i = 0; i<curDts.length ; i++){
                for(int j = 0; j<curDts[i].length; j++){
                    intent.putExtra("date"+i,"'"+curDts[i][j]+"',");
                    Log.v("sending","'"+curDts[i][j]+"',");
                }
            }

    for(int i=0; i<12; i++){    
        Log.v("",""+arg1.getExtras().getString("date"+i));
        }

Upvotes: 2

Views: 2096

Answers (5)

Malik Aldhafer
Malik Aldhafer

Reputation: 21

You Can simply do like this: in the first class:

String[][] bidderList; 
Intent intent = new Intent(class1.this, class2.class);
intent.putExtra("bidderList",bidderList);
startActivity(intent);
finish();

Then in the second class where you want to receive the 2d array do like this:

String[][] bidderList;
bidderList =(String[][]) getIntent().getSerializableExtra("bidderList");

And that is all :>, you will need to use for loop to access the String[][] array elements

Upvotes: 1

Moh Sakkijha
Moh Sakkijha

Reputation: 2705

String[] are serializable objects as well as String[][] that means you can simply use the ready method in the intent intent.putExtra(key,serializableObject) , and on your receiver side you could say intent.getSerializableExtra(KEY);

if that what you was looking for.

Edited

To pass your data do something like :

    Object[] objArr = new Object[]{ new String[]{"2"} ,new String[]{"5"}};
    intent.putExtra("dates", objArr);

and to retreive them :

    private BroadcastReceiver mBroadcastReceiver = new  BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {

    Object[] obj = (Object[]) intent.getSerializableExtra("dates");
    if(obj != null){
        for (int i = 0; i < obj.length; i++) {
            String[] object = (String[])obj[i];
            Log.d(getClass().getSimpleName(), "OBJ : " + object[0]);
        }
    }

    }
};

Upvotes: 2

Hareshkumar Chhelana
Hareshkumar Chhelana

Reputation: 24848

// try this way,hope this will help you...
Note : try to use ArrayList<ArrayList<String>> insted of two dimensional which can be easy Serializable.


**FirstActivty**
public class MyActivity extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity1);
        ArrayList<ArrayList<String>> list = new ArrayList<ArrayList<String>>();
        ArrayList<String> first = new ArrayList<String>();
        first.add("1");
        first.add("2");
        first.add("3");

        ArrayList<String> second = new ArrayList<String>();
        second.add("4");
        second.add("5");
        second.add("6");

        ArrayList<String> third = new ArrayList<String>();
        third.add("7");
        third.add("8");
        third.add("9");

        list.add(first);
        list.add(second);
        list.add(third);
        Intent intent =new Intent(this,MyActivity2.class);
        intent.putExtra("SerializableList",list);
        startActivity(intent);
    }

}

**SecondActivity**
public class MyActivity2 extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity2);

        ArrayList<ArrayList<String>> list = (ArrayList<ArrayList<String>>) getIntent().getSerializableExtra("SerializableList");

        for (int i=0;i<list.size();i++){
            ArrayList<String> row = list.get(i);
            for (int j=0;j<row.size();j++){
                System.out.println("ParentIndex >> ChildIndex >> Value "+i+" >> "+j+" >> "+row.get(j));
            }
        }
    }

}

Upvotes: 0

njzk2
njzk2

Reputation: 39397

You can pass integers, and you can pass String[], so:

int i = 0;
intent.putExtra("size", curDts.length);
for (String[] value : curDts) {
    intent.putExtra("item"+ i++, value);
}

To retrieve it:

int size = intent.getIntExtra("size", 0);
String[][] curDts = new String[][size];
for (int i = 0; i < size; i++) {
    curDts[i] = intent.getStringArrayExtras('item" + i);
}

Upvotes: 0

rw.liang1
rw.liang1

Reputation: 418

One way to do this is to encode each String array within the larger array of arrays into a String, and pass a String array through the Intent. This String array can be decoded by the Activity receiving the Intent.

I wrote a class that can encode/decode a String array, which can be found here: https://gist.github.com/liangricha/10759438.

Alternatively, you can look into Serialization.

Upvotes: 0

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